package javaAPI.StringBuilderTest;

public class StringBuilderDemo2 {
    public static void main(String[] args) {
        int arr[]={1,2,3};
        String str=arrToString(arr);
        System.out.println(str);
    }
    public static String arrToString(int[]arr){
        StringBuilder sb=new StringBuilder();
        sb.append("[");
        for (int i = 0; i < arr.length; i++) {
            if (i==arr.length-1){
                sb.append(arr[i]);
            }else{
                sb.append(arr[i]+",");
            }
        }
        sb.append("]");
        return sb.toString();
    }
}
